现浇型生态混凝土护岸抗水力冲刷性能试验研究

发布时间：2018-06-08 16:14

本文选题：生态混凝土 + 护岸工程　；参考：《水利水电技术》2017年11期

【摘要】：目前,现浇型生态混凝土等新型的生态型护坡逐渐取代传统混凝土护坡,得到了越来越广泛的应用。但作为一种新兴的护坡方式,现浇型生态混凝土抗水力冲刷性能缺少实验数据的支撑。根据实际工程中的应用情况,制作了三种不同厚度的现浇生态混凝土样本,采用专用的实验仪器研究其在高速明渠流作用下的抗水力冲刷性能。结果表明:边界效应对生态混凝土的抗冲刷性能影响很大。在处理好边界效应的情况下,现浇型生态混凝土护岸在高速明渠流的作用下,水力淘刷现象不明显,下覆土体表面基本保存平整,土体高程下降微小(0.1 mm)。因此,现浇型生态混凝土护岸有着很好的抵抗高速水流(本研究最大流速达到6.11 m/s)冲刷的能力,在水利护岸工程中可以代替传统护岸和预制生态混凝土护岸进行应用。
[Abstract]:At present, new ecological slope protection, such as cast-in-place ecological concrete, is gradually replacing the traditional concrete slope protection, and has been more and more widely used. However, as a new way of slope protection, the hydraulic erosion resistance of cast-in-place ecological concrete is short of experimental data. According to the application of practical engineering, three kinds of cast-in-place ecological concrete samples with different thickness were made, and the hydraulic scour resistance performance of the concrete under the action of high-speed open channel flow was studied by special experimental instrument. The results show that the boundary effect has great influence on the scour resistance of ecological concrete. Under the condition of dealing with the boundary effect well, under the action of high-speed open channel flow, the phenomenon of hydraulic scouring and brushing is not obvious, the surface of the overlying soil is flat and the height of soil is decreased by 0.1 mm. Therefore, the cast-in-situ ecological concrete revetment has a good ability to resist the erosion of high speed water flow (the maximum velocity of this study is 6.11 m / s), and can be used in water conservancy revetment engineering instead of traditional bank protection and prefabricated ecological concrete bank revetment.
【作者单位】：河海大学水文水资源与水利工程科学国家重点试验室;河海大学港口海岸与近海工程学院;
【基金】：国家自然科学基金(51309092) 河海大学中央高校基本科研业务费项目(2015B16014)
【分类号】：TV861

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